What it says on the tin, prisoners of races that don't need sleep just wander around without doing any work at all. Android tiers is the main one but seems ANY race with no sleep need does this. Tested removing the need to sleep on some other races and they wander too instead of work without fail. Not sure if it's just me but I did see a thread on the old page for the mod that mentioned this same issue and that adding the need to sleep with rimmsqol fixes it. Obviously that's not ideal at all and is just a work around until the issue is fixed